import re
s='''
<li><a target="_blank" href="https://new.qq.com/omn/20210903/20210905A01FUH00.html" class="">美媒建议三方交易 波神辅佐利拉德CJ联手小萨</a></li>
<li><a target="_blank" href="https://new.qq.com/omn/20210903/20210904A00R0H00.html" class="">汤神：新赛季肯定打 伤病很无奈但我保证卷土重来</a></li>
<li><a target="_blank" href="https://new.qq.com/omn/20210903/20210904A00WRL00.html" class="">篮网18人大名单出炉！三巨头领衔6星豪阵和冲冠首发</a></li>
'''
res = re.findall('https://[a-zA-Z0-9/\.\-]*',s)
print(res)